brains, ears, fingers
First: no offense, (and you probably already got told this) but if you want to make some money off this, make it more of a preview. with the length of the song, it seems like this is it.
second: when i see the word lullaby, i think of stuff to put you to sleep. this is hardly that, unless the full title translates to something specific. (im guessing it does)
good song, catchy, danceable even. all in all, excellent work